[FFmpeg-user] video4linux2: Resource temporarily unavailable
llarevo at gmx.net
llarevo at gmx.net
Tue Jul 10 15:27:41 CEST 2012
> > I try to change my standard encoding tool from mencoder to ffmpeg. Now
> > I've got a problem with analog capturing. When trying to capture with
> > ffmpeg -f v4l2 -i /dev/video0 out.mpg, I get lots of errors:
> >
> > libv4l2: error dequeuing buf: Resource temporarily unavailable (s.b.)
>
> Please post complete, uncut console output here on the mailing
> list, external resources may disappear.
Sorry, I just wanted to keep the mail better readable. Here's the
complete information:
Hi,
I try to change my standard encoding tool from mencoder to ffmpeg. Now
I've got a problem with analog capturing. When trying to capture with
ffmpeg -f v4l2 -i /dev/video0 out.mpg, I get lots of errors:
libv4l2: error dequeuing buf: Resource temporarily unavailable (s.b.)
although I set the channel prior to the capturing via
v4lctl setchannel
Here you see an attempt with ffmpeg (after which a zero-byte outfile is
written):
ffmpeg -f v4l2 -i /dev/video0 out.mpg
ffmpeg version 0.10.4 Copyright (c) 2000-2012 the FFmpeg developers
built on Jun 13 2012 09:51:06 with gcc 4.7.0 20120507 (Red Hat
4.7.0-5)
configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
--libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
--extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
--enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
--enable-libcdio --enable-libcelt --enable-libdc1394
--disable-indev=jack --enable-libfreetype --enable-libgsm
--enable-libmp3lame --enable-openal --enable-libopenjpeg
--enable-libpulse --enable-librtmp --enable-libschroedinger
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
--enable-avfilter --enable-postproc --enable-pthreads --disable-static
--enable-shared --enable-gpl --disable-debug --disable-stripping
--shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
--------5000 TIMES THE LINE ABOVE--------
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: erro^C <---------I stopped that output--------
Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1341859570.870366, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x576,
-2147483 kb/s, 1.83 tbr, 1000k tbn, 1000k tbc
File 'out.mpeg' already exists. Overwrite ? [y/N] y
w:720 h:576 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
[mpeg1video @ 0x235db00] MPEG1/2 does not support 5/1 fps
Output #0, mpeg, to 'out.mpeg':
Stream #0:0: Video: mpeg1video, yuv420p, 720x576, q=2-31, 200 kb/s,
90k tbn, 5 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mpeg1video)
Error while opening encoder for output stream #0:0 - maybe incorrect
parameters such as bit_rate, rate, width or height
Received signal 2: terminating.
Here is an attempt with ffplay:
ffplay -v debug -f v4l2 -i /dev/video0
ffplay version 0.10.4 Copyright (c) 2003-2012 the FFmpeg developers
built on Jun 13 2012 09:51:06 with gcc 4.7.0 20120507 (Red Hat
4.7.0-5)
configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
--libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
--extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
--enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
--enable-libcdio --enable-libcelt --enable-libdc1394
--disable-indev=jack --enable-libfreetype --enable-libgsm
--enable-libmp3lame --enable-openal --enable-libopenjpeg
--enable-libpulse --enable-librtmp --enable-libschroedinger
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
--enable-avfilter --enable-postproc --enable-pthreads --disable-static
--enable-shared --enable-gpl --disable-debug --disable-stripping
--shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
[video4linux2,v4l2 @ 0x7ff1f80008c0] [7]Capabilities: 5010015
[video4linux2,v4l2 @ 0x7ff1f80008c0] Querying the device for the current
frame size
[video4linux2,v4l2 @ 0x7ff1f80008c0] Setting frame size to 720x576
[video4linux2,v4l2 @ 0x7ff1f80008c0] The V4L2 driver using the
interlaced modeThe V4L2 driver set input_id: 0, input: Television
[rawvideo @ 0x7ff1f8000e40] err{or,}_recognition separate: 1; 1
[rawvideo @ 0x7ff1f8000e40] err{or,}_recognition combined: 1; 10001
When I use ffmpeg -i /dev/video0 -f v4l2 out.mpg (-i and -f in the
opposite order) I get
/dev/video0: Invalid data found when processing input
as error:
ffmpeg -i /dev/video0 -f v4l2 out.mpg
ffmpeg version 0.10.4 Copyright (c) 2000-2012 the FFmpeg developers
built on Jun 13 2012 09:51:06 with gcc 4.7.0 20120507 (Red Hat
4.7.0-5)
configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
--libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
--extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
--enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
--enable-libcdio --enable-libcelt --enable-libdc1394
--disable-indev=jack --enable-libfreetype --enable-libgsm
--enable-libmp3lame --enable-openal --enable-libopenjpeg
--enable-libpulse --enable-librtmp --enable-libschroedinger
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
--enable-avfilter --enable-postproc --enable-pthreads --disable-static
--enable-shared --enable-gpl --disable-debug --disable-stripping
--shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
/dev/video0: Invalid data found when processing input
I belong to the group video on my system, so the access to
crw-rw----+ 1 root video 81, 0 10. Jul 14:13 /dev/video0
should be OK.
mplayer tv:// and xawtv works
cat /dev/video0 > out.raw writes lots of data.
I'm using a Terratec Cinergy 400 on Fedora F17. The v4l2 device info is
here:
### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "saa7134"
card : "Terratec Cinergy 400 TV"
bus_info : "PCI:0000:04:01.0"
version : 3.4.4
capabilities : 0x5010015
[VIDEO_CAPTURE,VIDEO_OVERLAY,VBI_CAPTURE,TUNER,READWRITE,STREAMING]
standards
VIDIOC_ENUMSTD(0)
index : 0
id : 0xb000 [NTSC_M,NTSC_M_JP,?]
name : "NTSC"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(1)
index : 1
id : 0x1000 [NTSC_M]
name : "NTSC-M"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(2)
index : 2
id : 0x2000 [NTSC_M_JP]
name : "NTSC-M-JP"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(3)
index : 3
id : 0x8000 [?]
name : "NTSC-M-KR"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(4)
index : 4
id : 0xff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K]
name : "PAL"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(5)
index : 5
id : 0x7 [PAL_B,PAL_B1,PAL_G]
name : "PAL-BG"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(6)
index : 6
id : 0x8 [PAL_H]
name : "PAL-H"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(7)
index : 7
id : 0x10 [PAL_I]
name : "PAL-I"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(8)
index : 8
id : 0xe0 [PAL_D,PAL_D1,PAL_K]
name : "PAL-DK"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(9)
index : 9
id : 0x100 [PAL_M]
name : "PAL-M"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(10)
index : 10
id : 0x200 [PAL_N]
name : "PAL-N"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(11)
index : 11
id : 0x400 [PAL_Nc]
name : "PAL-Nc"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(12)
index : 12
id : 0x800 [PAL_60]
name : "PAL-60"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(13)
index : 13
id : 0xff0000
[SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
name : "SECAM"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(14)
index : 14
id : 0x10000 [SECAM_B]
name : "SECAM-B"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(15)
index : 15
id : 0x40000 [SECAM_G]
name : "SECAM-G"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(16)
index : 16
id : 0x80000 [SECAM_H]
name : "SECAM-H"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(17)
index : 17
id : 0x320000
[SECAM_D,SECAM_K,SECAM_K1]
name : "SECAM-DK"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(18)
index : 18
id : 0x400000 [SECAM_L]
name : "SECAM-L"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(19)
index : 19
id : 0x800000 [?ATSC_8_VSB]
name : "SECAM-Lc"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Television"
type : TUNER
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
VIDIOC_ENUMINPUT(1)
index : 1
name : "Composite1"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
VIDIOC_ENUMINPUT(2)
index : 2
name : "S-Video"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
VIDIOC_ENUMINPUT(3)
index : 3
name : "Composite2"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
tuners
VIDIOC_G_TUNER(0)
index : 0
name : "Television"
type : ANALOG_TV
capability : 0x72 [NORM,STEREO,LANG2,LANG1]
rangelow : 0
rangehigh : 4294967295
rxsubchans : 0x3 [MONO,STEREO]
audmode : STEREO
signal : 65535
afc : 0
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 0
description : "8 bpp gray"
pixelformat : 0x59455247 [GREY]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "15 bpp RGB, le"
pixelformat : 0x4f424752 [RGBO]
VIDIOC_ENUM_FMT(2,VIDEO_CAPTURE)
index : 2
type : VIDEO_CAPTURE
flags : 0
description : "15 bpp RGB, be"
pixelformat : 0x51424752 [RGBQ]
VIDIOC_ENUM_FMT(3,VIDEO_CAPTURE)
index : 3
type : VIDEO_CAPTURE
flags : 0
description : "16 bpp RGB, le"
pixelformat : 0x50424752 [RGBP]
VIDIOC_ENUM_FMT(4,VIDEO_CAPTURE)
index : 4
type : VIDEO_CAPTURE
flags : 0
description : "16 bpp RGB, be"
pixelformat : 0x52424752 [RGBR]
VIDIOC_ENUM_FMT(5,VIDEO_CAPTURE)
index : 5
type : VIDEO_CAPTURE
flags : 0
description : "24 bpp RGB, le"
pixelformat : 0x33524742 [BGR3]
VIDIOC_ENUM_FMT(6,VIDEO_CAPTURE)
index : 6
type : VIDEO_CAPTURE
flags : 0
description : "24 bpp RGB, be"
pixelformat : 0x33424752 [RGB3]
VIDIOC_ENUM_FMT(7,VIDEO_CAPTURE)
index : 7
type : VIDEO_CAPTURE
flags : 0
description : "32 bpp RGB, le"
pixelformat : 0x34524742 [BGR4]
VIDIOC_ENUM_FMT(8,VIDEO_CAPTURE)
index : 8
type : VIDEO_CAPTURE
flags : 0
description : "32 bpp RGB, be"
pixelformat : 0x34424752 [RGB4]
VIDIOC_ENUM_FMT(9,VIDEO_CAPTURE)
index : 9
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2 packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(10,VIDEO_CAPTURE)
index : 10
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2 packed, UYVY"
pixelformat : 0x59565955 [UYVY]
VIDIOC_ENUM_FMT(11,VIDEO_CAPTURE)
index : 11
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2 planar, Y-Cb-Cr"
pixelformat : 0x50323234 [422P]
VIDIOC_ENUM_FMT(12,VIDEO_CAPTURE)
index : 12
type : VIDEO_CAPTURE
flags : 0
description : "4:2:0 planar, Y-Cb-Cr"
pixelformat : 0x32315559 [YU12]
VIDIOC_ENUM_FMT(13,VIDEO_CAPTURE)
index : 13
type : VIDEO_CAPTURE
flags : 0
description : "4:2:0 planar, Y-Cb-Cr"
pixelformat : 0x32315659 [YV12]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 720
fmt.pix.height : 576
fmt.pix.pixelformat : 0x33524742 [BGR3]
fmt.pix.field : INTERLACED
fmt.pix.bytesperline : 2160
fmt.pix.sizeimage : 1244160
fmt.pix.colorspace : unknown
fmt.pix.priv : 0
video overlay
VIDIOC_ENUM_FMT(0,VIDEO_OVERLAY)
index : 0
type : VIDEO_OVERLAY
flags : 0
description : "8 bpp gray"
pixelformat : 0x59455247 [GREY]
VIDIOC_ENUM_FMT(1,VIDEO_OVERLAY)
index : 1
type : VIDEO_OVERLAY
flags : 0
description : "15 bpp RGB, le"
pixelformat : 0x4f424752 [RGBO]
VIDIOC_ENUM_FMT(2,VIDEO_OVERLAY)
index : 2
type : VIDEO_OVERLAY
flags : 0
description : "15 bpp RGB, be"
pixelformat : 0x51424752 [RGBQ]
VIDIOC_ENUM_FMT(3,VIDEO_OVERLAY)
index : 3
type : VIDEO_OVERLAY
flags : 0
description : "16 bpp RGB, le"
pixelformat : 0x50424752 [RGBP]
VIDIOC_ENUM_FMT(4,VIDEO_OVERLAY)
index : 4
type : VIDEO_OVERLAY
flags : 0
description : "16 bpp RGB, be"
pixelformat : 0x52424752 [RGBR]
VIDIOC_ENUM_FMT(5,VIDEO_OVERLAY)
index : 5
type : VIDEO_OVERLAY
flags : 0
description : "24 bpp RGB, le"
pixelformat : 0x33524742 [BGR3]
VIDIOC_ENUM_FMT(6,VIDEO_OVERLAY)
index : 6
type : VIDEO_OVERLAY
flags : 0
description : "24 bpp RGB, be"
pixelformat : 0x33424752 [RGB3]
VIDIOC_ENUM_FMT(7,VIDEO_OVERLAY)
index : 7
type : VIDEO_OVERLAY
flags : 0
description : "32 bpp RGB, le"
pixelformat : 0x34524742 [BGR4]
VIDIOC_ENUM_FMT(8,VIDEO_OVERLAY)
index : 8
type : VIDEO_OVERLAY
flags : 0
description : "32 bpp RGB, be"
pixelformat : 0x34424752 [RGB4]
VIDIOC_ENUM_FMT(9,VIDEO_OVERLAY)
index : 9
type : VIDEO_OVERLAY
flags : 0
description : "4:2:2 packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(10,VIDEO_OVERLAY)
index : 10
type : VIDEO_OVERLAY
flags : 0
description : "4:2:2 packed, UYVY"
pixelformat : 0x59565955 [UYVY]
VIDIOC_G_FMT(VIDEO_OVERLAY)
type : VIDEO_OVERLAY
fmt.win.w.left : 0
fmt.win.w.top : 0
fmt.win.w.width : 0
fmt.win.w.height : 0
fmt.win.field : ANY
fmt.win.chromakey : 0
fmt.win.clips : (nil)
fmt.win.clipcount : 0
fmt.win.bitmap : (nil)
VIDIOC_G_FBUF
capability : 0x4 [LIST_CLIPPING]
flags : 0x0 []
base : (nil)
fmt.width : 1920
fmt.height : 1200
fmt.pixelformat : 0x34524742 [BGR4]
fmt.field : ANY
fmt.bytesperline : 7680
fmt.sizeimage : 9216000
fmt.colorspace : unknown
fmt.priv : 0
vbi capture
VIDIOC_G_FMT(VBI_CAPTURE)
type : VBI_CAPTURE
fmt.vbi.sampling_rate : 27000000
fmt.vbi.offset : 256
fmt.vbi.samples_per_line: 2048
fmt.vbi.sample_format : 0x59455247 [GREY]
fmt.vbi.start[0] : 7
fmt.vbi.start[1] : 319
fmt.vbi.count[0] : 16
fmt.vbi.count[1] : 16
fmt.vbi.flags : 0
controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 128
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 127
step : 1
default_value : 68
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 127
step : 1
default_value : 64
flags : 0
VIDIOC_QUERYCTRL(BASE+3)
id : 9963779
type : INTEGER
name : "Hue"
minimum : -128
maximum : 127
step : 1
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(BASE+5)
id : 9963781
type : INTEGER
name : "Volume"
minimum : -15
maximum : 15
step : 1
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(BASE+9)
id : 9963785
type : BOOLEAN
name : "Mute"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(BASE+20)
id : 9963796
type : BOOLEAN
name : "Mirror"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+0)
id : 134217728
type : BOOLEAN
name : "Invert"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+1)
id : 134217729
type : INTEGER
name : "y offset odd field"
minimum : 0
maximum : 128
step : 1
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+2)
id : 134217730
type : INTEGER
name : "y offset even field"
minimum : 0
maximum : 128
step : 1
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+3)
id : 134217731
type : BOOLEAN
name : "automute"
minimum : 0
maximum : 1
step : 0
default_value : 1
flags : 0
Since I'm new to ffmpeg, some help is very appreciated.
Thanks in advance
--
Felix
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